William knowles



(No Model.) W. KNOWLES.

GOVERNOR POR STBAM'BNGINES. No. 279,097. Patented June 5.1883.

WITNESSES: WM Q/Qwg;

L//D v/vf? ATTORNEYS.

N. PETERS. Phmo-ulhgnpher, washimun. D. C.

UNITED STATES PATENT OFFICE.

NVILLIAM KNOVVLES,QF BOLTON, COUNTY OF 'LACASTER ENGLAND.

GOVERNOR FOR STEAM-ENGINES.

SPECIFICATION forming part of Letters Patent No 279,097, dated June 5, 1883.

Application filed December 19, 188.2.V (No model.) Patented in England January el, FB2. No. 310.

To all wwnt zit may concern:

Be it known that l, WILLIAM KNowLns, a subject of the Grown of Great Britain, residing at Bolton, in the county ofLancaster, England,have invented a new and useful Improve ment in Governors for Steam-Engines, (for which I obtained Letters Patent in Great Britain, No. 310, bearing date January 21, 1882,) ot' which the following is a specification.

Heretoforc it has been common tol control the action of engine throttle-valves and cutoffs by a single agency or means acting upon the same-such, for instance, as a ball-gov ernor, which closes the throttleevalve more or less when too great a velocity of the engine raises the balls, and by the reverse action gradually opens the valve to the required extent tocause the engine to regain normal speed. A certain amount of force is required to operate the valve. 'llo t'uIL-nish this force the weight `of the balls and the length of their arms have to be proportioned to the power and speed of the engine and the force required. As a geueral rule the larger the engine the heavier the governor-balls must be, and asa natural consequence the more slowly their inertia will be overcome, so the less quickly will they act on the valve.

The object of my invention is to accelerate -the action ofthe governor on the throttle-valve or the cut-off, as the case may be, in order that the variation of speed of the engine consequent to varying pressure of steam and varying amount of load may be reduced to aminimum.

To this end my invention consists in a regulating device interposed between the main or usual governor and the valve on which it acts, and operated automatically, as hereinafter described and claimed, reference being had to the accompanying drawing, which is an elevation of one form of my invention, showing also its relation to a common ball-governor.

a represents a common ball-governor operating a'valve-rod or cut-off rod, c, by means of a leyer, a, connecting-rod b, and lever b, or by any other usual means. f

@represents an auxiliary governor driven from any convenient shaft which receives Inotion from the same engine.

I make the rod c in two parts, and provide their adjacent ends, respectively, with right and left screw threads, and l4 join. them by means of a right-and-lctt-screw-threaded nut, d." l provide this nut d'with a grooved pulley to be run by a driving-band, r, from another pulley, i the latter fixed upon a shaft, fr?, which provided with a disk, h. This disk l1, is caused to Yrotate by frictional contact with either 011e of two other disks, f and g, and the latter rotate together in one direction with the spindle of the auxiliary governor e.

The two disks f and l/ are 'fined upon a sleeve which is caused to reciprocate vertically upon the govcrnorspindle by the usual action ot' the governor-balls as their speed varies. These disks j' and g may be arranged to be adjusted vertically upon their sleeve to allow much or little vertical play before coming in contact with disk 71.

lt has been found in pract-ice that the best results are produced when the two disksf and g are placed very close to the edge of disk hsay one-sixteenth ofan inch, or even less, therefromiand said disks are controlled by aseparate and independent governor, e, driven from some shaft ot' the same engine.

The act-ion is as follows.: Supposing the speed ofthe engine to be increasing, the balls of the governor a` are gradually rising, causing the valve or valves operated therebyto be acted o n through the valve-rod c, so as to gradually reduce the speed. The balls of the auxiliary governor e will also rise, bringing disk gin contact with disk h, avhich causes the nut d to rapidly unscrew, thus extending rod c and accelerating the reduction of speed. When the speed falls below the standard, disk g will be disengaged from disk 71, and disk jl engaged therewith, causing nut el to rotate the other way, drawing in the ends ot'trod c and shortening it, thus in a similar manner accelerating the process of increasing speed.

I have thought of so many modes of auto matically operating a regulating device interposed between the main governor and its valve, to insure and accelerate the regulation of the speed of a steam-engine, that I do not deem it necessary to illustrate my invent-ion by more i than the one device shown.

The auxiliary governor e may be dispensed with, and its duty in operating said regulat- IOO ing device be performed bythe ini'tin governor a butI prefer the use of an independent gov ernor substantially as shown. A

Vhat I elaiin as my invention, und wish. to secure by Letters Patent, is-

l. The combination, with an engine-governorztnd the vulve operated thereby, of eX tensible and eontraetible connections eoininunieating between said governor and velves, undmeans, substantially as described, for dutoinatieally extending and contracting said eouneetions, us and for the purpose speeiiied.

2. The combination, withY an engine-gov ernor, the vvalve operated thereby, :L parted rod having right and lett serew-threzuls, respeetively, on its adjacent ends, and means for connecting said rod with the valve and with the governor, of :t right-endlett-threaded screwnut adapted to .receive said screw-threaded rod ends, und ineens, substantially :is described,

for revolving said serew-nut to and fro, :1s and for the purposespeeified.

3. `The combination, with the parted rightandleft-screw-threaded rod c, and means for Connecting the sinne :Lt one end with mi enginewalve und :tt the other end with un enginegovernor, ot' the right and left threaded nut d, engaging the threads of the adjacent ends of rod f', the governor c, the disksj' and g, operated thereby, the disk l1, between said disksf and g, the shnit yi, supporting und revolved by disk 71, the grooved pulleyr j on shaft fi, the grooved pulley on nut d, und the band 7c, coin,- inunieating rotary motion from pulley j to nut d, :1s :nld for the purpose specified.

WILLIAM KNOVLES. 'itnesses:

H. B. BAnLow, VW. (HLLETT, 120H: QI' l? Si. i-lmzs Squru'e, IanCheste-r. 

